Physics question and answers for May 06, 2024
- Q Two satellites of same mass are revolving around a planet of mass M and radius R at heights R and 2R then answer the following questions
- Q A body of mass m which is initially at rest at a height R above the surface of the earth of radius R,falls freely towards the earth, then its K.E....
- Q What happens to the gravitational force between two objects ifa) The mass of one is doubledb) The masses of both are increased by a factor of 5c) The distance between...
- Q Two masses are attracted by a gravitational force of 19.0 N.What will the force of attraction be if the distance between the very same two masses tripled?A. 4.0 NB. 2.11...
- Q What is the gravitational force between a 40 kg ballerina, and the Earth at 5.98 x 1024 kg, with a distance of 6.38 x 106 m?Object 1 (m?): 40 kg...
- Q The magnitude of the gravitational attraction force that the earth exerts on an 85-kilogram person who is 4.0 x 107meters away from the center of the earth is best approximated...
- Q (hrw8c13p51) A comet that was seen in April 574 by Chinese astronomers on a day known by them as the Woo Woo day was spotted again in May 1994. Assume...
- Q A 4.0 x 104 kg spaceship is at rest in deep space.Its thrusters provide a force of 1200 kN. Thespaceship fires its thrusters for 20 s, then coasts for12 km.?Part...
- Q Three equal masses are located on a coordinate grid so that the masses and the origin form a square with side length l, as shown in thefigure. Find the magnitude...
- Q A satellite with a mass of 125kg is in orbit at a distance of 3.00x106 m above the surface of the Earth.Mass ofEarth=5.9723x1024kgRadius of Earth-6.378x106ma. What is the radius of...
- Q Find the force by the moon on Earth using Newton's Law of Gravitation formula. Their masses are7.4 x 1022 kg and 6.0 x 1024 kg and it is 3.8 x...
- Q 10. The mass of the moon is 7.35x1022 kg and the mass of the earth is 5.97x1024 kg.The moon's orbit distance is 3.84x108 m. What is the gravitational force on...
- Q Kepler's 3rd law relates the semi major axis of an orbit with its period (the time it takes for theorbiting body to go around a full cycle). When using units...
- Q The gravitational force the Sun exerts on EarthA. is always repulsive.B. is equal in magnitude to the gravitational force the Earth exerts on the Sun.C. is equal in magnitude to...
- Q Finally, consider the gravitational force generated by a spherically symmetrical massive object. The magnitude and direction of such a force are given by Newton's law of gravity:FG = - Gm1m2r/r^2where...
- Q Europa, a satellite of Jupiter, is believed to have a liquid ocean of water (with a possibility of life) beneath its icy surface. In planning a future mission to Europa,...
- Q Suppose one night the radius of the earth doubled but its mass stayed the same. What would be an approximate new value for the free-fall acceleration at the surface of...
- Q A sensitive gravimeter at a mountain observatory finds that the free-fall acceleration is 0.0055 m/s less than that at sea level (9sea level = = 9.83 m/s).
- Q Which of the following is true about the Universal Gravitational Law?Force of gravity is directly proportional to the product of masses and also directly proportional to the squareof the distance...
- Q Newton's law of gravity describes the gravitational force betweena person and the earth.the sun and the planets.All of the listed answers are correct.Earth and the sun.Earth and the moon.
- Q The radius of the Earth's orbit around the sun (assumed to be circular) is 1.50*10^8 km, and the Earth travels around this obit in 365 days. The mass of the...
- Q During a solar eclipse, the Moon, the Earth, and the Sun all lie on the same line, with the Moonbetween the Earth and the Sun. Calculate: (a) the net force...
- Q An astronaut weighing 214 lbs on Earth is on a mission to the Moon and Mars. (a) What would he weigh in newtons when he is on the Moon? The...
- Q A satellite of mass m is in a stable circular orbit around Earth at a distance R, from the center of Earth.The mass of Earth is M...(a) Derive an expression...
- Q Taking the radius of the earth to be 6400 km, by what percentage will the acceleration due to gravity at a height of 100 km from the surface of the...
- Q A particle is projected vertically upwards and it reaches the maximum height H in T seconds. Theheight of the particle at any time t will be :-(A) H-g(t-T)(B) g(t-T)(C) H-1/2g(t-T)(D)...
- Q Suppose that a small communications satellite with mass mA is orbiting the Earth in a circular orbit. If we launch a second satellite B with twice the mass of A...
- Q Two objects attract each other with a gravitational force of 16 units. If the distance between the two objects is doubled, explain what would happen. What is the new force...
- Q A shuttle moves between station A and B on earth along a vacuum tunnel which is a chord across the earth as shown. The shuttle moves on the bases of...
- Q A piece of space debris is released from rest at an altitude that is two earth radii from the center of the earth. Compare the weight of the space debris...
- Q A spaceship is stationary between a planet and its moon, experiencing an equal gravitational pull from each. When measurements are taken, it is determined that the craft is 300,000 km...
- Q Determine the force of gravity between the moon and a 5,500kg elephant. The mass of the moon is 7.35*10 kg, and the distance between the elephant and the center of...
- Q The value of the gravitational acceleration g decreases with elevation from 9.807 m/s at the sea level to 9.767 m/s at an altitude of 13000 m, where large passenger planes...
- Q Compare the atmospheric circulation patterns of Venus and Earth. What are the roles of solar heating and planetary rotation? How does the presence of water on Earth give rise to...
- Q Compare and contrast Jupiter and Saturn. Indicate how their differing masses and distances from the Sun can explain many of the observed differences in the atmospheres and interiors of these...
- Q A Batman throws a gibber stone of weight 2500.0 N at an adversary. He applies a horizontal acceleration of 14.0 m/s. Find the magnitude of the horizontal force applied by...
- Q The mass of the sun is about 2 x 1030 kg, and the mass of earth is 6 x 1024 kg. Approximately how many times greater is the mass of...
- Q Which statement best explains how the gravitational forces affect the mass and weight of an object on Earth and the Moon?A. The weight of an object will be lighter while...
- Q Joe has a weight of 654 N (about 144 lb) when he is standing on the surface of the Earth.(a) What would his weight (the gravitational force due to the...
- Q Suppose an astronaut has landed on Mars. Fully equipped, the astronaut has a mass of 123 kg, and when the astronaut gets on a scale, the reading is 454 N....
- Q 11. If you are told that the accepted value of G is 6.67*10-11 m/ (skg), calculate the percent error, and make a statement concerning the accuracy of your results using...
- Q Consider a spherical homogeneous cloud of mass M made by an explosion. Due to energy received from the explosion, it is expanding and the expansion is spherically symmertric. At an...
- Q 1. Two solid spheres of radius R made of the same type of steel are placed in contact, as shown in the figures above. The magnitude of the gravitational force...
- Q 2. An astronaut of mass 63 kg climbs a set of stairs with a total vertical rise of 3.4 m. (a) What is the astronaut's gravitational potential energy, relative to...
- Q Before 2006, while Pluto was still considered a planet, people used this saying to remember the nine planet names: "My very excellent mother just sent us nine pizzas.Come up with...
- Q A satellite of mass 500 kg orbits the earth with a period of 6,000 s. The earth has a mass of 5.97 x 1024 kg, aradius of 6.38 106 m,...
- Q Neptune has a slightly smaller radius and a slightly greater mass than Uranus. If you threw a ball with the same velocity on both planets, what would be true? (Assume...
- Q Johannes Kepler was a German mathematician and astronomer who lived from 1571-1630. He discovered the mathematical relationship between the orbital radius and orbital period:This says:The orbital period squared is proportional...
- Q Imagine you put a cannon on the top of a very tall mountain. You start firing cannonballs horizontally. Each time you add more gunpowder to the cannon, which makes the...
- Q Recently there has been a lot of hue and cry over the possibility of an asteroid hitting the earth. NASA reports that it has spotted an asteroid Bennu which may...
- Q If I weigh 741 N on Earth at a place where g = 9.80 m/s and 5320 N on the surface of another planet, what isthe acceleration due to gravity...
- Q What is the gravitational force of attraction between two asteroids in space, each with a mass of 50,000 kg, separated by a distance of 3800 m?
- Q 19. A spacecraft which is moving with a speed u relative to the earth in the x-direction, enters the gravitational field of a much more massive planet which is moving...
- Q As represented in the diagram below, an object of mass m, located on the surface of the Moon, is attracted to the Moon with a gravitational force, F.(Not drawn to...
- Q Why do you have different weights on different planets?
- Q Sally and Sam are in a spaceship that comes to within 18,000 km of the asteroid Ceres. Determine the force Sally experiences, in N, due to the presence of the...
- Q A 70.7-kilogram astronaut weighs 694 newtons at the surface of Earth.What is the mass of the astronaut at the surface of the Moon, where theacceleration due to gravity is 1.62...
- Q The function h = -16t + 1700 gives an object's height h, in feet, at t seconds.a. What does the constant 1700 tell you about the height of the object?b....
- Q An infinitely long wire having uniform mass density is placed along z-axis. If W is the work done by an external agent to move a point mass m very slowly...
- Q Two stones A and B are thrown in upward direction with speed 60 m/s on north pole and equator respectively. Third stone C is thrown on the surface of moon...
- Q part 1 of 3During a solar eclipse, the moon (of mass 7.36 x 1022 kg). Earth (of mass 5.98 x 1024 and Sun (of mass 1.99 x 100 kg) lie...
- Q The nucleus of the deuterium atom (heavy water) consists of a proton and a neutron at a distance of about 2x10^-15 m. The mass of the proton and neutron is...
- Q Mars has a mass of about 6.39 10^23 kg, and its moon Phobos has a mass of about 1 x 10^16 kg. If the magnitude of the gravitational force between...
- Q Calculate the radius of the orbit of an exoplanet in a circular orbit around a star whose mass is 1.54 times that of the sun with a period of 2.2...
- Q The radius of the earth is 6.371 x 10^6 m and its mass is about 5.972 x 10^24 kg. Calculate the gravitational force on a satellite of mass 650 kg...
- Q In the distant future, when humans have mastered space travel, we find ourselves on a new planet. We have determined that the radius of the planet is 6.7x10^6 m. In...
- Q Given: G = 6.67259 x 10- Nm/kg.A 1220 kg geosynchronous satellite orbits a planet similar to Earth at a radius 1.94 x 10^5 km from the planet's center. Its angular...
- Q The period of the earth around the sun is 1 year and its distance is 150 million km from the sun. An asteroid in a circular orbit around the sun...
- Q Jupiter has a mass of 1.898x1027 kg and radius of 69,912 km. If we were to treat Jupiter as if it was a sphere of uniform density, what would be...
- Q In this problem, you will calculate the location of the center of mass for the Earth-Moon system, and then you will calculate the center of mass of the Earth-Moon-Sun system....
- Q The mass of a moon is MM and the mass of the planet it orbits is Mp. The distance between the center of the moon and the center of the...
- Q The nearest neighboring star to the Sun is about 4 light-years away. If a planet happened to be orbiting this star at an orbital radius equal to that of the...
- Q A satellite is orbiting Earth at a distance of 2 km from the Earth's surface. The radius of the Earth is 6.37x10^6 m, the mass of the Earth is 6x10^24...
- Q A satellite is orbiting Earth at a distance D from the surface of the Earth. The radius of the Earth is RE, the mass of the Earth is ME and...
- Q How much would a 51.8 kg person weigh on the surface of Venus?Remember, weight is a force! And if you are standing on the surface of a planet, the distance...
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